1	package antlr;
2	
3	/**
4	 * <b>SOFTWARE RIGHTS</b>
5	 * <p>
6	 * ANTLR 2.5.0 MageLang Institute, 1998
7	 * <p>
8	 * We reserve no legal rights to the ANTLR--it is fully in the
9	 * public domain. An individual or company may do whatever
10	 * they wish with source code distributed with ANTLR or the
11	 * code generated by ANTLR, including the incorporation of
12	 * ANTLR, or its output, into commerical software.
13	 * <p>
14	 * We encourage users to develop software with ANTLR. However,
15	 * we do ask that credit is given to us for developing
16	 * ANTLR. By "credit", we mean that if you use ANTLR or
17	 * incorporate any source code into one of your programs
18	 * (commercial product, research project, or otherwise) that
19	 * you acknowledge this fact somewhere in the documentation,
20	 * research report, etc... If you like ANTLR and have
21	 * developed a nice tool with the output, please mention that
22	 * you developed it using ANTLR. In addition, we ask that the
23	 * headers remain intact in our source code. As long as these
24	 * guidelines are kept, we expect to continue enhancing this
25	 * system and expect to make other tools available as they are
26	 * completed.
27	 * <p>
28	 * The ANTLR gang:
29	 * @version ANTLR 2.5.0 MageLang Institute, 1998
30	 * @author Terence Parr, <a href=http://www.MageLang.com>MageLang Institute</a>
31	 * @author <br>John Lilley, <a href=http://www.Empathy.com>Empathy Software</a>
32	 */
33	class TokenRangeElement extends AlternativeElement {
34		String label;
35		protected int begin=Token.INVALID_TYPE;
36		protected int end  =Token.INVALID_TYPE;
37		protected String beginText;
38		protected String endText;
39	
40	
41		public TokenRangeElement(Grammar g, Token t1, Token t2, int autoGenType) {
42			super(g, autoGenType);
43			begin = grammar.tokenManager.getTokenSymbol(t1.getText()).getTokenType();
44			beginText = t1.getText();
45			end = grammar.tokenManager.getTokenSymbol(t2.getText()).getTokenType();
46			endText = t2.getText();
47			line = t1.getLine();
48		}
49		public void generate() {
50			grammar.generator.gen(this);
51		}
52		public String getLabel() {
53			return label;
54		}
55		public Lookahead look(int k) {
56			return grammar.theLLkAnalyzer.look(k, this);
57		}
58		public void setLabel(String label_) { 
59			label = label_; 
60		}
61		public String toString() {
62			if ( label!=null ) {
63				return " "+label+":"+beginText+".."+endText;
64			}
65			else {
66				return " "+beginText+".."+endText;
67			}
68		}
69	}
70